tileset color mapping, modified background, about button

- removed redundant colors.txt from the tileset directories
- added missing color schemes for some tilesets
- added an xml mapping between tilesets and their default color schemes
- removed the install graphics button, users are now prompted upon
choosing an item

- the button to update save files shows properly again
- moved the dll files to the MasterworkDwarfFortress subdir
- added an about button to the menu
fixed random creature issue

- fixed an issue where if the random creature/entity/language files are
missing when the app loads, the first run of random creature won't allow
deletions
fix for backwards 'simple' settings

- fixes the simple xx buttons in the misc. section, which had the
enable/disable tokens set backwards.
- also fixed the description on the mineral scarcity tooltip
Merge remote-tracking branch 'splinterz/master' into settings

* splinterz/master:
  fix for backwards 'simple' settings
  fixed random creature issue
  tileset color mapping, modified background, about button